1422166121 has 2 divisors, whose sum is σ = 1422166122. Its totient is φ = 1422166120.

The previous prime is 1422166117. The next prime is 1422166157. The reversal of 1422166121 is 1216612241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 794112400 + 628053721 = 28180^2 + 25061^2 .

It is a cyclic number.

It is not a de Polignac number, because 1422166121 - 2² = 1422166117 is a prime.

It is not a weakly prime, because it can be changed into another prime (1422166721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 711083060 + 711083061.

It is an arithmetic number, because the mean of its divisors is an integer number (711083061).

Almost surely, 2^1422166121 is an apocalyptic number.

It is an amenable number.

1422166121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1422166121 is an equidigital number, since it uses as much as digits as its factorization.

1422166121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152, while the sum is 26.

The square root of 1422166121 is about 37711.6178517973. The cubic root of 1422166121 is about 1124.5621001235.

Adding to 1422166121 its reverse (1216612241), we get a palindrome (2638778362).

The spelling of 1422166121 in words is "one billion, four hundred twenty-two million, one hundred sixty-six thousand, one hundred twenty-one".